_____over 100 years since the invention of the square-bottomed paper bag.
The novelist John Dos Passes developed a style of fiction incorporating several documentary devices ____ to his works.
In Earth's infancy, its surface was warm enough for life ____ the young Sun
was fainter than it is today.
The invention of the compound microscope (which allowed much higher magnification through multiple lenses) made _____ the great strides in life sciences.
Hares generally have longer ears and hind legs than rabbits and move by jumping
_____crumbles readily when exposed to a moist, acid atmosphere, but the stone is durable in a dry atmosphere.
By using their trunks, elephants can tell the shape of an object and_____ is rough or smooth, or hot or cold.
In 1989 Carret Hongo was chosen as_____for the Pulitzer Prize in poetry.
The Moon is much closer to Earth_____ is the Sun, and thus it had greater influence on the tides.
The brain of an average adult is one of the largest organs of the body, _____about three pounds.